Props” for McDonnell Douglas: The Unducted Fan Projects That Never Took Off
GE and Safran tout new 'open rotor' engine future for sustainable aviation | The Seattle Times
jet engine - Turboprops, propfans, and unducted fan engines | Britannica
Evolutionary Trail Of The Open-Fan Engine | Aviation Week Network
New 'Open Rotor' Engine Concept Might Cut Aviation Emissions by 20% - Teckexperts.com
Cheap fuel killed propfan concepts decades ago. Can CFM's revived concept endure? | Analysis | Flight Global
Cheap fuel killed propfan concepts decades ago. Can CFM's revived concept endure? | Analysis | Flight Global
Propfan - Wikipedia
Aerospaceweb.org | Ask Us - Propfan Engines
Pratt & Whitney-Allison Unducted Fan Engine | Download Scientific Diagram
Cheap fuel killed propfan concepts decades ago. Can CFM's revived concept endure? | Analysis | Flight Global
Motore propfan - Wikipedia
General Electric GE36 Unducted Fan | Aircraft engine, Aircraft design, Aircraft
Whatever happened to propfans? | News | Flight Global
Propfan - Wikipedia
Ultra High Bypass Jet Engine Propfan Technology | Aviation Videos | AeroSpaceNews.com - YouTube
Propfan Power: The Story of the Unducted Fan Engine – Airways Magazine
The Ultra High Bypass Engine
Propfan - Wikipedia
jet engine - Turboprops, propfans, and unducted fan engines | Britannica
General Electric unducted fan propulsor concept Modern technologies... | Download Scientific Diagram
/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/fan-388-sept05.jpg "The Short, Happy Life of the Prop-fan | Air & Space Magazine| Smithsonian Magazine")
The Short, Happy Life of the Prop-fan | Air & Space Magazine| Smithsonian Magazine
File:UDF-cross-section.png - Wikimedia Commons
Propfan Power: The Story of the Unducted Fan Engine – Airways Magazine
Propfan Engine with GB for 3D printer - YouTube
Advanced turboprop (ATP) engines. Schematic images of a an unducted fan... | Download Scientific Diagram
File:UDF-cross-section.png - Wikimedia Commons
